Arinto, more precisely Arinto de Bucelas, historic Portuguese white grape variety most commonly encountered in bucelas in which it must constitute at least 75% of the blend. It is also grown in many other parts of Portugal, notably Tejo and Lisboa. Arinto is respected for its high acidity and can yield wines which gain interest and, sometimes, a citrus quality with age. As an ingredient in vinho verde it is known as Pedernã. Total plantings had fallen to 3,175 ha/7,846 acres by 2010.

Arinto do Dão is a syonym for malvasia Fina in dão.